Flanged Seals


DT-EN Truncated Flanged Diaphragm Seal
The Ashcroft® truncated flanged diaphragm seal model DT protects pressure measuring instruments on isolated pipes or tanks.
Extension and Diaphragm Material | Flange Material | Pressure Ratings |
---|---|---|
Extension: 316L Stainless steel; Diaphragm: 316L Stainless Steel or Hastelloy C-276 | 316L Stainless Steel | PN10 to PN40 |


DT-ASME Truncated Flanged Diaphragm Seal
The Ashcroft® truncated flanged diaphragm seal model DT protects pressure measuring instruments on isolated pipes or tanks.
Extension and Diaphragm Material | Flange Material | Pressure Ratings |
---|---|---|
Extension: 316L Stainless steel; Diaphragm: 316L Stainless Steel or Hastelloy C-276 | 316L Stainless Steel | 150 to 1500 - class flanges |



DFE-EN All-Welded Flanged Diaphragm Seal
The Ashcroft® DFE all-welded flanged diaphragm seal uses a diaphragm welded directly to the assembly flange and a light weight flange inlay.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | 316L Stainless Steel, Monel 400, Hastelloy C 276 | PN10 to PN40 - class flanges |



DFE-ASME All-Welded Flanged Diaphragm Seal
The Ashcroft® DFE all-welded flanged diaphragm seal uses a diaphragm welded directly to the assembly flange and a light weight flange inlay.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | 316L Stainless Steel, Monel 400, Hastelloy C 276 | 150 to 300 - class flanges |



DF-EN Flush Flanged Diaphragm Seal
The Ashcroft® DF flush flanged diaphragm seal uses a flush diaphragm welded directly to the assembly flange, eliminating the need for a bulky lower housing.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials with optional coating | Flush design eliminates need for a bottom housing | PN10 to PN100 - class flanges |



DF-ASME Flush Flanged Diaphragm Seal
The Ashcroft® DF flush flanged diaphragm seal uses a flush diaphragm welded directly to the assembly flange, eliminating the need for a bulky lower housing.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials with optional coating | Flush design eliminates need for a bottom housing | 150 to 2500 - class flanges |
702-703 Flanged High Displacement Diaphragm Seals
The Ashcroft® 702 and 703 high-displacement diaphragm seals or isolation devices are used with low pressure or differential pressure gauges with low differential pressure and elevated static pressure.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic and non-metallic wetted materials | Variety of metallic and non-metallic materials | 150 to 600 - class flanges |
402-403 Flanged All-Weld Diaphragm Seals
The Ashcroft® 402 and 403 flanged all-weld diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | Variety of metallic materials | 150 to 1500 - class flanges |

302-303 Flanged Diaphragm Seals
The Ashcroft® 302 and 303 diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Viton, Teflon, Kalrez | Variety of metallic and non-metallic materials | 150 to 1500 - class flanges |


206 In-Line Flanged Diaphragm Seals
The Ashcroft® 206 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic and non-metallic wetted materials | Variety of metallic wetted materials | Flange Class: 150 |


202-203 Flanged Diaphragm Seals
The Ashcroft® 202 and 203 diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | Variety of metallic and non-metallic materials | 150 to 1500 - class flanges |


106 In-Line Flanged Diaphragm Seals
The Ashcroft® 106 in-line flanged diaphragm seal or isolation device protects pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | Variety of metallic wetted materials | 150Flange Class: 150 |


102-103 Flanged Diaphragm Seals
The Ashcroft® type 102 and 103 flanged diaphragm seals or isolation devices protect pressure measuring instruments.
Diaphragm Material | Bottom Housing Material | Pressure Ratings |
---|---|---|
Variety of metallic wetted materials | Variety of metallic and non-metallic materials | 150, 300, 600, 900 or 1500 |